Chain brand: Mostly SRAM. A couple of KMC X9EPT Eco Proteq for winter use. One stupid Shimano 10 speed
Speeds: 9 and 10 (1)
Surface: You name it, I ride it. Dirt, paved, rocks, sand, floods, locusts, plagues of Egypt, etc.
Bike + rider weight: Um. North of what I should be but my bikes are fairly light. Let's just say solidly clyde. Bikes range from a portly 28 lb to a rather svelte 20 lb...but portly compared to carbon fiber norms
Lubricant: White Lightning Clean Ride
Lube interval in miles: 400 to 600 miles...White Lightning is very wrong on their application interval. But they are trying to sell lubricant.
Remove chain to clean/wash? No but that's because I don't clean it except for on initial installation
If yes, how often: Once.
Average chain life in miles: Estimate about 3000 miles. Actual measurement of one chain: 3500.